The concept of a proletarian party occupies a central position in the political thought and activity of Marx and Engels. "Against the collective power of the propertied classes", they argued, "the working class cannot act as a class except by constituting itself into a political party distinct from, and opposed to, all old parties formed from the propertied classes." This was "indispensable in order to ensure the triumph of the social revolution, and its ultimate end, the abolition of classes." Yet nowhere do the authors of the Manifesto of the Communist Party set out in systematic form a theory of the proletarian party, its nature and its characteristics any more than they do for social class or for the state, to both of which it is closel...